胭脂红对3T3细胞DNA损伤的SCGE检测

Journal of Tongji University(Medical Science)(2008)

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Abstract
目的研究人工合成偶氮类色素胭脂红对体外培养小鼠胚胎成纤维细胞株(NIH3T3)DNA的损伤作用。方法单层培养的3T3细胞中加入不同浓度胭脂红培养4 h,用碱性单细胞凝胶电泳技术(single cell gel elec-trophoresis,SCGE)检测3T3细胞DNA的单链断裂(single-strand breaks,SSBs)情况。结果各染毒组彗星细胞率、彗星细胞的尾长、尾部DNA含量及尾矩与胭脂红浓度正相关,呈剂量-反应关系。结论胭脂红对体外培养3T3细胞DNA具有损伤作用,浓度越大,损伤越严重。
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Key words
alkaline single cell gel electrophoresis,ponceau 4R,NIH3T3
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